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Bing SJ, Chen XS, Zhong X, Li YQ, Sun GJ, Wang CY, Liang Y, Zhao XZ, Hua DL, Chen L, Mo HZ. Structural, functional and antioxidant properties of Lentinus edodes protein hydrolysates prepared by five enzymes. Food Chem 2024; 437:137805. [PMID: 37879156 DOI: 10.1016/j.foodchem.2023.137805] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/09/2023] [Accepted: 10/17/2023] [Indexed: 10/27/2023]
Abstract
The purpose of this study was to investigate structural, functional and antioxidant properties of Lentinus edodes protein hydrolysates (LEPHs) by alcalase, protamex, trypsin, papain and neutrase. Structural and functional properties were determined using gel electrophoresis, Fourier transform infrared spectroscopy, laser scattering, fluorescence spectroscopy, emulsifying properties etc. Antioxidant activities were detected by Fe2+ chelating, hydroxyl and DPPH radical scavenging assays. Enzymatic hydrolysis destroyed secondary and tertiary structures of Lentinus edodes protein, decreased its molecular weight and particle size, particularly hydrolysate prepared by alcalase with the highest hydrolytic degree (32.86 ± 0.98 %), the smallest particle (130.77 ± 1.85 nm) and molecular weight (5.86 kDa). Moreover, alcalase hydrolysate exhibited the highest emulsifying stability, the strongest hydroxyl radical scavenging activity and Fe2+ chelating ability among LEPHs. Whilst trypsin hydrolysate displayed the highest DPPH radical scavenging, foaming and fat absorption capacity. These results provided basis for LEPH as ingredients to be used for food industry.
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Affiliation(s)
- Shu-Jing Bing
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Xing-Shuo Chen
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Xin Zhong
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Ying-Qiu Li
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China.
| | - Gui-Jin Sun
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Chen-Ying Wang
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Yan Liang
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Xiang-Zhong Zhao
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Dong-Liang Hua
- School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Lei Chen
- School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, Jinan 250353, China
| | - Hai-Zhen Mo
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 453003, China
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Ge J, Du Y, Wang Q, Xu X, Li J, Tao J, Gao F, Yang P, Feng B, Gao J. Effects of nitrogen fertilizer on the physicochemical, structural, functional, thermal, and rheological properties of mung bean (Vigna radiata) protein. Int J Biol Macromol 2024; 260:129616. [PMID: 38266839 DOI: 10.1016/j.ijbiomac.2024.129616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 12/03/2023] [Accepted: 01/17/2024] [Indexed: 01/26/2024]
Abstract
Nitrogen fertilizer can affect the seed quality of mung bean. However, the effects of nitrogen fertilizer on the properties of mung bean protein (MBP) remain unclear. We investigated the effects of four nitrogen fertilization levels on the physicochemical, structural, functional, thermal, and rheological properties of MBP. The results showed that the amino acid and protein contents of mung bean flour were maximized under 90 kg ha-1 of applied nitrogen treatment. Nitrogen fertilization can alter the secondary and tertiary structure of MBP. The main manifestations are an increase in the proportion of β-sheet, the exposure of more chromophores and hydrophobic groups, and the formation of loose porous aggregates. These changes improved the solubility, oil absorption capacity, emulsion activity, and foaming stability of MBP. Meanwhile, Thermodynamic and rheological analyses showed that the thermal stability, apparent viscosity, and gel elasticity of MBP were all increased under nitrogen fertilizer treatment. Correlation analysis showed that protein properties are closely related to changes in structure. In conclusion, nitrogen fertilization can improve the protein properties of MBP by modulating the structure of protein molecules. This study provides a theoretical basis for the optimization of mung bean cultivation and the further development of high-quality mung bean protein foods.
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Affiliation(s)
- Jiahao Ge
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Yarong Du
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Qi Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Xiaoying Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Jie Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Jincai Tao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Feng Gao
- Agricultural Technology Extension Center of Hengshan District, Hengshan, Shaanxi Province 719199, China
| | - Pu Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Baili Feng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | - Jinfeng Gao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
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Kotnala B, Panneerselvam V, Vijayakumar AK. Physicochemical, structural, and functional characterization of guar meal protein isolate ( Cyamopsis tetragonoloba). Heliyon 2024; 10:e24925. [PMID: 38318049 PMCID: PMC10838761 DOI: 10.1016/j.heliyon.2024.e24925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/07/2024] Open
Abstract
Guar korma and churi protein isolates were assessed for their physicochemical, nutritional, functional, structural, and digestibility properties for their application in the food industry. The water extracted protein isolate of guar korma showed a protein content of 89.7 % and a yield of 48.7 %. Water extracted protein isolate of guar korma showed an excellent protein efficiency ratio, essential amino acid/total amino acids (34.35 %), amino acid score, and protein digestibility corrected amino acid score values, suggesting the existence of high-quality proteins. Water extracted protein isolate of guar korma contains all the essential amino acids except Methionine and Cysteine, according to World Health Organization recommendations for children and adults. The protein profiling of water extracted protein isolate of guar korma was analyzed using 12 % sodium dodecyl sulfate polyacrylamide gel electrophoresis and indicated the presence of eight major protein bands in the range of 17-100 kDa. In vitro digestibility of water extracted protein isolate of guar korma showed the complete digestion of the abundant protein bands within 15 min. Further, the foaming capacity, water/oil holding capacity, and emulsifying stability of water extracted protein isolate of guar korma were comparable with soy protein isolate. Fourier Transform Infrared and Circular Dichroism spectral analysis revealed the presence of several aromatic groups and β-sheets, random coils respectively in water extracted protein isolate of guar korma. The morphological nature of the guar protein isolate was characterized by Scanning Electron Microscopy. Overall, these findings support that water extracted protein isolate of guar korma has excellent functional and nutritional properties and could be a potential alternative plant protein in food industries.
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Affiliation(s)
- Bhavya Kotnala
- Department of Biochemistry, CSIR – Central Food Technological Research Institute, Mysore, 570020, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Vijayaraj Panneerselvam
- Department of Biochemistry, CSIR – Central Food Technological Research Institute, Mysore, 570020, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Arun Kumar Vijayakumar
- CSIR-CFTRI Resource Center, Lucknow, 226019, India
- Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
- Artificial intelligence and Machine Learning (AI&ML) Unit, National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, 695 019, India
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